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 *  Darin Fisher <darin@meer.net>
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#include "nsISupports.idl"

/**
 * This interface provides a means to cancel an operation that is in progress.
 *
 * @status UNDER_REVIEW
 */
[scriptable, uuid(d94ac0a0-bb18-46b8-844e-84159064b0bd)]
interface nsICancelable : nsISupports
{
  /**
   * Call this method to request that this object abort whatever operation it
   * may be performing.
   *
   * @param aReason
   *        Pass a failure code to indicate the reason why this operation is
   *        being canceled.  It is an error to pass a success code.
   */
  void cancel(in nsresult aReason);
};